Marquez, TX: 2 Health Violations — 86/100 (2026)
1 ZIP code · 4 water systems · Updated 2026-06-03
Marquez's tap water quality puts it in TX's upper tier — health-based violations are rare and the compliance record is consistently above average.
How Marquez Compares
Data: EPA SDWIS Last verified: 2026-06-03
Marquez Water: The Quick Version
- Your city's water systems recorded 10 violations in the past 5 years.
- Homes built before 1986: 23% — older plumbing may contain lead solder.
- Estimated remediation: $300 per household.
- CDC health risk index: 15.02 — above typical levels.
Water Systems Serving Marquez
3 independent water providers serve Marquez, TX — 4 systems appear in federal records.
Overview
We track water quality and home safety data for 1 ZIP code in Marquez, Texas (population ~1,818), covering 4 community water systems serving approximately 9,831 people region-wide.
1 of 1 ZIP code (100%) have recorded EPA violations. 2 health-based violations documented.
Home Safety Score
Average Home Safety Score for Marquez: A (86/100)
The score combines three factors:
| Factor | What It Measures |
|---|---|
| Water Quality | EPA violations and compliance history |
| Lead Levels | 90th percentile lead concentration vs EPA action level |
| Radon Risk | EPA radon zone classification |
Water Sources
Marquez water systems draw from: Groundwater.
Lead & Copper
- Lead data: not yet available for Marquez
- 0 ZIP codes exceed the EPA lead action level
Radon Risk
Dominant radon zone: Zone 3 (Low Risk)
Top Contaminants
| Contaminant | Category | Violations | ZIPs Affected |
|---|---|---|---|
| Stage 2 DBP Rule | Treatment Technique | 8 | 1 |
| Lead and Copper Rule | Treatment Technique | 6 | 1 |
| Selenium | Inorganic | 2 | 1 |
| Total Organic Carbon | Disinfection Byproducts | 2 | 1 |
| Stage 1 DBP Rule | Treatment Technique | 2 | 1 |
Areas with Most Violations
| ZIP Code | Safety Score | Violations | Health-Based | System |
|---|---|---|---|---|
| 77865 | A | 10 | 2 | Concord-robbins Water Supply Corporation |
All ZIP Codes in Marquez
- 77865 [A] — 10 violations ⚠
Data Sources
- Water quality: EPA Safe Drinking Water Information System (SDWIS)
- Lead/copper: EPA Lead and Copper Rule sampling data
- Radon: EPA Map of Radon Zones
Updated daily.
CDC Health Data for Marquez
Source: CDC PLACES (County-level estimates). Water contamination can correlate with respiratory and chronic health conditions.
Compared to National Average
Vertical line = national average. ■ Above national · ■ Below national
Key Contaminants Detected in Marquez
Based on EPA violation records. Check your ZIP code report for system-specific contaminant data.
How Old Is Marquez's Housing Stock?
Housing age data helps assess potential lead pipe and infrastructure risks. Newer housing stock generally means lower plumbing-related contamination risk.
Source: U.S. Census Bureau American Community Survey (ACS).
Housing Age Profile
Newer construction dominates Marquez's residential inventory, as reflected in a median build year of 2006. The practical implication is that lead-soldered copper plumbing joints — a pre-1986 standard now federally prohibited — are an exception rather than the rule in this city, though they remain present in the older fraction of the housing stock.
Most homes in Marquez were built after 1986, reducing the risk of lead contamination from plumbing. Older homes should still be tested.
Source: U.S. Census Bureau ACS B25034.
Marquez: Remediation Cost in Perspective
Given current Marquez valuations, the remediation-to-property-value ratio is low — most homeowners are looking at a proportionally modest share that fits within routine financial planning.
Remediation costs in Marquez are relatively low compared to home values. The $150–$600 estimated range is a small fraction of median property value. Home values are 19% below the Texas average.
Protecting Children from Lead in Marquez
Why children are most at risk: The CDC states there is no safe level of lead exposure for children. Children under 6 absorb lead more readily than adults, and even low levels can cause developmental delays, learning difficulties, and behavioral problems.
Whenever aggregate samples pass the federal action benchmark and pre-rule housing — 23% in Marquez — represents a smaller fraction, lead occupies a lower priority on the local picture.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
Deep Dive Reports
Detailed analysis for Marquez, TX